Yakoub Beldjehem, solo developer, financial softwareOpen to work

I build trading tools, and I prove whether they work.

Backend, frontend and deployment, on my own. Eight projects below — one of them is here because I shut it down after the data said it had no edge.

Get in touch GitHub

The work, April to October 20268 projects, one in two versions

TradeWise Decide before you click buy In development Active 18 May 2026 to now.
CL_BOT A trading bot, and the case against it Shut down on the evidence Active May to early June 2026, then shut down.
Niche Discovery An evidence engine for product ideas Working prototype Active August 2026.
DZIRI First words in Arabic, French and English In use Active late August 2026 to now.
Crosswell Oil, gas & industrial sourcing for Algeria Preview Active October 2026 to now.
SlotQuote Instant quotes, booking and invoices for service businesses Live trial Active 29 October 2026 to now.
515 Pro A local service site that quotes before it books Front-end prototype Active April to May 2026.
515 Pro, Version 2 The same site, rebuilt around a truck you fill by tapping Front-end prototype Active late October 2026.
StockIQ The version before TradeWise Superseded Active May 2026, until 17 May, when TradeWise began.

In development May – Oct 2026

TradeWise

Decide before you click buy

A mobile-first tool that helps a beginner judge one trade. It reads fundamentals, technicals and news sentiment into a verdict and shows its working, and no paper trade can be saved until you have set an amount, a horizon, a stop and a target and seen the simulated odds — the plan is the product, not the signal.

Paper trades only; it never touches a broker. Every trade is journalled and replayable against historical bars. Each stock also shows which famous investors own it, read from their SEC 13F filings, its chart patterns marked where they happened, and how each of those patterns really did on that stock over five years (against the base rate, with no hindsight); a screener runs the same verdict over whole sectors. I built the legal layer too — disclaimer, privacy policy, and a consent record where the database stamps the timestamp, because a browser-supplied one proves nothing.

FastAPI
Python 3.12
React
TypeScript
Vite PWA
Supabase
Postgres RLS

Open the live app

111 commits
18,830 lines
236 files

TradeWise on Apple in the dark theme: a SELL 91% verdict with its score and valuation, a three-month price chart with pattern markers, Wall Street targets, insider trades and entry timing, over a faint candlestick chart in the background — TradeWise on Apple, October 2026: the verdict and its numbers, the price chart, what analysts and insiders are doing, and when to enter.

Shut down on the evidence May – Jun 2026

CL_BOT

A trading bot, and the case against it

I built an automated crypto trading system, ran it live on paper, and then proved to myself it did not work. Two opposite paradigms — trend-following and mean-reversion — both failed across 365-day backtest sweeps.

Before closing it I tested the strongest remaining lever: a 120-cell strategy × regime × stop-loss matrix with an n ≥ 30 guard, so small-sample flukes could not pass as edge. Every qualifying cell was negative. I wrote the postmortem and stopped.

Python
FastAPI
SQLite
React
Binance API

22 commits
4,763 lines
71 files

CL_BOT backtest: total return -3.31%, 92 trades, 30.4% win rate, and a falling equity curve over a year — A 365-day backtest re-run in October 2026: BTC/USDT, EMA/RSI crossover, 92 trades, −3.31% after fees.

Working prototype Aug 2026

Niche Discovery

An evidence engine for product ideas

A pipeline that finds underserved e-commerce niches from real public signal rather than guesswork: Reddit, Stack Exchange, Wikipedia, US Bureau of Labor Statistics and YouTube, normalised into comparable entities, then scored and ranked with an explicit confidence measure.

Cost was a design constraint. The expensive AI path is opt-in, each run is metered and pre-flighted against a budget, and free mode is the default — an engine that quietly spends money on speculative research is a bad engine.

Python
SQLAlchemy
Anthropic API
SQLite

Open the demo

Read-only snapshot of the 82 stored runs — running new research is off

18,053 lines
5 data sources
106 files

Niche Discovery dashboard: 82 topics analysed, top opportunities with a score, a confidence figure and a verdict each — The dashboard over 82 stored research runs. Every score sits next to how much evidence backs it.

In use Aug – Oct 2026

DZIRI

First words in Arabic, French and English

A picture-card app for small children, built for my own kid — which makes it the only project here with a user who gives completely unfiltered feedback. The parent picks a language and the child's age once; each age then shows what it is learning now, from first words and body parts for a baby to opposites, letters and feelings at four, and what has been mastered drops away. Every age also gets four little picture books: lift the flap, touch to count, and an alphabet book that builds itself in each language.

Every word and story line is read aloud in a female or a male voice, the parent's choice — about 970 clips each, generated once, trimmed, levelled and bundled — and every card is drawn in code. Action cards add a first sentence said by Yusuf or Noor, a boy and a little girl: “Noor is eating”, where the Arabic verb changes with who is doing it. Under each card is one question for the parent to ask, because toddlers learn from a screen mainly when an adult talks with them about it. It works offline once opened. Algerian Darija comes next, word by word with a native speaker: the dialect is specific enough that guessing produces something confidently wrong, so the app does not guess.

React
TypeScript
Vite PWA
Offline-first
3 languages

Open the live app

No sign-in — it opens straight into the app

50 commits
6,552 lines
2,019 files

Three DZIRI screens: the home page for a two-year-old, a lift-the-flap story page, and a cat card with a question for the parent — Home for a two-to-three-year-old, a lift-the-flap story, and a card with its question for the parent.

Preview Oct 2026

Crosswell Industrial Sourcing

Oil, gas & industrial sourcing for Algeria

The website for my new company: commercial representation and sourcing that connects industrial suppliers in North America and Europe with procurement requirements in Algeria, with a focus on oil and gas. Three working inquiry forms — supplier partnership, sourcing request, general contact — each validated on the server, stored with a reference number, and alerted by email.

English, French and Arabic, right-to-left included. Nothing on it is invented: no clients, history or credentials the business does not have, and it says plainly what it cannot promise. The contact details are placeholders until launch.

Astro
TypeScript
Cloudflare Workers
D1
3 languages

Open the site

Preview — placeholder contact details

40 pages
2,451 lines
77 files

The live preview at tender.yakoub.net. The French and Arabic (right-to-left) versions share the same pages.

Live trial Oct 2026

SlotQuote

Instant quotes, booking and invoices for service businesses

A booking page for cleaners, junk haulers, groomers and other service businesses. The owner sets their prices once; customers answer a few questions, see their exact price, pick a free time and book; and the finished job becomes an invoice the customer can pay online. Owners can also paste one line into their own website to show the calculator there.

One pricing engine serves every trade: a new trade is a data file, not new code. Deposits that hold the slot while the customer pays, reminders for overdue invoices, a private link for customers to move or cancel, and accounts with a username and a password that never leaves the browser, with several businesses on one account. Built to run on free plans, with a strict security policy and customer details deleted on a schedule. Trial: open to a few businesses for now; customer photos and card payments are built and switch on later.

Astro
TypeScript
React
Cloudflare Workers
D1
Stripe Connect

Open the site

Live — try the three demo businesses; bookings there are for testing

185 tests
10,309 lines
151 files

SlotQuote home page: the headline Quote. Book. Get paid. beside a quote card for a cleaning business totalling $275.00 with two time slots, and a paid invoice card — The live home page at slotquote.yakoub.net. Below it, a working calculator for each trade.

Front-end prototype Apr – May 2026

515 Pro Junk Removal

A local service site that quotes before it books

An eight-page site for a Des Moines junk-removal business, in English and Spanish with one toggle that every page remembers. The quote builder prices 30 items across five categories, plus add-ons, senior and military discounts and a $95 minimum, and a ZIP check confirms the address is in the service area.

The estimate carries into a four-step booking flow that ends with a confirmation and an add-to-Google-Calendar link. No framework, no build step, and the shared nav is written in ES5 so older phone browsers still render it. Front end only: bookings are not sent anywhere yet, and the contact details are placeholders.

HTML
CSS
Vanilla JS
2 languages

Open the site

Demo — bookings are not sent, placeholder contact details

8 pages
3,289 lines
11 files

515 Pro Junk Removal home page: the headline Junk removed, stress relieved, done right, next to a list of what they haul — The home page. The quote builder and the booking flow sit behind “Build my quote”.

Front-end prototype Oct 2026

515 Pro Junk Removal (Version 2)

The same site, rebuilt around a truck you fill by tapping

A redesign of the 515 Pro site, kept online beside the original. The home page opens on a cartoon cab-over junk truck: tap a sofa, a fridge or a bag of junk and it drops into the bed while a ticket adds up the listed prices and the $95 minimum. The picks carry straight into the full 30-item quote.

Green and white throughout: a vivid emerald hero, mint washes, a touch of lime and golden review stars, with credited photographs of the Des Moines River, the High Trestle Trail and the Botanical Garden. Spanish reaches every line the scripts write, and on phones the running total rides along at the bottom while you pick. Front end only: bookings are not sent anywhere yet, and the contact details are placeholders.

HTML
CSS
Vanilla JS
2 languages

Open Version 2

Demo — bookings are not sent, placeholder contact details

8 pages
4,183 lines
15 files

515 Pro Version 2 home page in green and white: the headline in white on emerald beside a white card holding a drawn truck with seven tapped items and a $355 total — Seven items tapped in: the ticket adds their listed prices before anything is booked.

Superseded May 2026

StockIQ

The version before TradeWise

My first attempt at stock-analysis tooling: a Python server with a browser front end doing screening and trade planning.

Work stopped on 17 May 2026; TradeWise's first commit is dated 18 May. The verdict logic carried over almost unchanged — TradeWise gives Apple the same SELL — but everything around it was rebuilt: a FastAPI service and a React app with tests, a breakdown of why each verdict was reached, and paper trades you can replay against what the price actually did. It is listed because replacing it was the correct call. Its look was refreshed in October 2026; the analysis behind it is unchanged.

Python
Vanilla JS

Open the app

No sign-in — archived demo; saved plans are shared and reset on restart

7,764 lines
29 files
Archived

StockIQ analysing Apple: a red SELL signal with 91% confidence and a fair value of $157.39 against a $347.73 price, over a dot-matrix background — StockIQ on Apple, October 2026.